wdwerker 7647 Posted May 18, 2018 Report Share Posted May 18, 2018 I had to give away the same tablesaw twice ! 1 Quote Link to post Share on other sites
Johnny4 74 Posted May 18, 2018 Report Share Posted May 18, 2018 On 5/14/2018 at 12:25 PM, Chestnut said: You could add a VFD to your old lathe .... just ya know throwing that out there. WHERE CAN I LEARN THIS POWER? 1 Quote Link to post Share on other sites
Chestnut 5647 Posted May 18, 2018 Report Share Posted May 18, 2018 32 minutes ago, Johnny4 said: WHERE CAN I LEARN THIS POWER? Yeah i know what a VFD is and how it works but to explain how to install one is outside my Enginerding skills. Quote Link to post Share on other sites
RileyD 9 Posted May 18, 2018 Report Share Posted May 18, 2018 There is a kit available for some lathes https://www.pennstateind.com/store/TCLVSKIT.html Quote Link to post Share on other sites
Brendon_t 2503 Posted May 18, 2018 Author Report Share Posted May 18, 2018 18 minutes ago, Chestnut said: Yeah i know what a VFD is and how it works but to explain how to install one is outside my Enginerding skills. Instead of plugging into the 3 pH outlet, the motor is wired to the drive which converts from 1 to 3 phase. How it's wired really depends on the vfd but I can't imagine it being that hard. Quote Link to post Share on other sites
Tom King 3791 Posted May 18, 2018 Report Share Posted May 18, 2018 The VFD (variable frequency drive) takes the place of the switch. Three wires in from the power cord, and three wires out to the motor. You get all sorts of choices by pushing buttons to change the readout to what you want, including direction, and how fast the motor spins up to final rpm. I have one on my big bandsaw, and one on the big compressor, which are currently the only 3-phase tools I'm running. Quote Link to post Share on other sites
Chestnut 5647 Posted May 19, 2018 Report Share Posted May 19, 2018 I can't remember if it has to be 3phase motor though .... My guess is maybe depends on if the startup circuit works in lower frequencies. Quote Link to post Share on other sites
Tom King 3791 Posted May 19, 2018 Report Share Posted May 19, 2018 I don't know about single phase motors, and VFD's. I know some variable speed heat pumps use them to control the motor speed, but those are 3 phase to 3 phase commercial units. I only looked into the ones I needed to run 3 phase from single phase source, and I like them a lot, but it would be an expensive speed control on a cheap lathe. Quote Link to post Share on other sites
wtnhighlander 7685 Posted May 19, 2018 Report Share Posted May 19, 2018 Here's a quick explanation of what does and doesn't work in the realm of single-phase VFDs: https://www.wolfautomation.com/blog/vfds-for-single-phase-motors/ Quote Link to post Share on other sites
Chestnut 5647 Posted May 29, 2018 Report Share Posted May 29, 2018 https://minneapolis.craigslist.org/hnp/tls/d/powermatic-wood-lathe-3520b/6601971669.html Just popped up in my area. This is an affordable beginner model right? Quote Link to post Share on other sites
pkinneb 3612 Posted May 29, 2018 Report Share Posted May 29, 2018 24 minutes ago, Chestnut said: https://minneapolis.craigslist.org/hnp/tls/d/powermatic-wood-lathe-3520b/6601971669.html Just popped up in my area. This is an affordable beginner model right? That might be just a tad overkill for a beginner LOL 1 Quote Link to post Share on other sites
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